Educational device



March 15 1927. 1,621,262

A. E- M QUARRlE EDUCATIONAL DEVICE Filed Aug. 11; 1924 jg/altar; '1 776m Qua/" neg Patented Mar. 15, 19 27 UNIT E STA Y ABCHIBALD MAOQUABRIE, MINNEAPOLIS, MINNESQTA.

nnuc'arronan DEyIcE.

- Application filed August 11, 1924. Serial mi. 731,238.

This inventionrelates to an educational device and its purpose is to provide an improvement in school room construction and equipment'whereby the instruction of pupils may be more conveniently andefficiently carried on. The instruction of pupils, particularly those in the lower grades, is attended with better results where maps,

charts and cards carrying various instructional data are displayed in combination with the blackboard, located in front of the class, so that the information contained on the charts, maps and. the like may be supplemented by other instructional data placed alongside on the blackboard by the instructor, or the pupils may be caused to copy on the blackboard,- adjacent the displayed chart .or card, the lesson which is' so displayed,

with the blackboard, and the advantage of.

such display is often increased by the ability to shift the cards, charts and the like longitudinally of the wall so that they may be displayed successively or moved from one position to another for the instruction of ifierent sections of a class. It is the principal object of the present invention to provide an improved school room construction.

whereby ma s, charts, cards and the like may be disp ayed on the wall of the school room. Another important object is to provide an improved school room construction whereby maps, charts, cards and other instructional devices may be displayed in combination with the blackboard. Other objects and. advantages of the, invention will car more clearl hereinafter. I

The nature of the invention will be understood from the following specification taken with theaccompanying drawings in which one embodiment is illustrated. In the drawings. Figure 1 shows a pers ective view of a ortion of a school room slibwing the embo lmenttherein of the features of the present invention; Fig. 2 shows a sectional view .taken on the line' 22 of Fig. 1 looking in the direction of the arrows,

and Fig, 3 is a perspective view of a portion of the display device by which maps, charts, cards and the like are mounted in position on the wall of the room.

The present invention comprises a'school room having a wall 10, located in front of "the class, side walls 11, a floor 12, and a ceiling 13; On the wall 10 located in front of the classthere is mounted a blackboard 14 having along the bottom thereof a rail or shelf 15 adapted to support erasers and the like in the usual manner and having along the top edge thereof the usual, mold mg 16. There is mounted above the blackboard, preferably in proximity to the top edge thereof,a longitudinal slotted bar 18 having the form illustrated more particularly in Fig. 3, this bar comprising a rear wall 19, a top. wall 20, a bottom wall 21, a flange 22 extending downwardly fro mthe front edge of the top wall 20, and a flange of the bottom wall 21, all these parts being formed as an integral construction, preferably by rolling them from sheet-metal. The rear wall 19 is provided with a plurality of apertures 24 adapted to be engaged by screws 25 for securing the bar to the wall.

The top wall 20 is provided with a rectangular opening 27 which preferably has 23 extending upwardly from the front edge a notch 28 extending downwardly therefrom through the flange 22 and forming a communication between the opening 27 and the longitudinal slot 29 which extends longi-' tudinally'of the bar between the edges of the top flange 22 and the lower flange 23.

The openin s 27 and communicating notches 28, whlch may be distributed as intervals throughout the length of the bar 18 across the width of the. school room, are adapted to ermit the insertion into and withdrawal roin the under-cut groove of the slotted bar 18 of a pluralit .of holding blocks or plates 30 and'31. T e blocks 30 are rectangular inygforrn and formed referably of material such as rubber, cor linoleum, wood, or the like, which may be perforated by thumbtacks 32 or other-sharp devices adapted to engage the maps or other sheets to e supported. The corners of the blocks 30 are rounded as shown at 33 so that the. edges will not catch on the corners of the openings 27 and 28 when theblocks 30 are caused to move longitudinally in the under-cut groove of the supporting bar. The

other supporting members 31 are similar in ners 34, but they may be formed of metal or other similar material andare provided on their front sides with supporting hooks 35 which are adapted to project outwardly through the slot 29 of the bar to engage eyelets or other supporting devices carried by the maps or charts to be displayed. When the holding members 31 are inserted into or withdrawn from the slotted bar, the hooks 35 are adapted to pass through the notches 28, these notches being unnecessary to permit the insertion .and Withdrawal of the holding blocks 30 which are employed in connection with the thumb-tacks 32. The

longitudinal dimension of the notches 28 should preferably be less than the longitudinal dimension of the holding blocks 30 and 31 so that when these blocks are caused tq slide longitudinally of the bar 18 past anyv one of the openings 27, theportionsof the flange 22 at each side of each notch 28 will prevent the holding blocks 30 and 31 from tiltin outwardly.

Alt ough there are various devices bearing instructional data which may be displayed on the wall of the school room according to the resent invention, there are illustrated in Fig. 1 certain articles which are displayed over the surface of the blackboard by means of the display device herein described. The card or sheet 40 may be a card bearing an example of penmanship which is displayed tothe class and which may be prefera ly copied by them in the space on the blackboard immediately be-' neath the card or sheet. The sheet 41 may be a chart displaying the spelling lesson of .the class and this spelling lesson may be studied from the chart or copied by the pupils on the blackboard and may be readily replaced by another lesson or chart sim l by removing the thumb-tacks 3.2 by wluc t e chart is attached to the holding. blocks 30 mounted in the slotted bar 18 above the blackboard. The numeral 42 is used to designate a cover sheet having holding straps 43 which are suspended from hooks 35 on the holdin blocks 30 mounted in the slotted bar 18 so t at the cover sheet may be em loyed to cover up examination uestions, or exam le,-which are designate by the numerals indicated at 44, so that after the class is assembled and in readiness to receive the examination, the cover sheet may be removed, preferably by sliding the blocks 34 longitudlnally of the bar 18 in the under-cut.

. goove thereof. At the right of the blackard, as illustrated in Fig. 1, there is shown a picture 45 havln suspended members 46 which are attache to hooks35 carried by the supporting blocks 31'which are movable in the slotted bar 18. This picture may be copied on the blackboard by one or more pupils or it may be used for the instruction of the class and then shifted longitudinally to a new position, for the instruction of another section of the class, for example. There are variousother ways in which the maps, charts, and other instructional devices.

'school room pre erably in combination with the blackboard, and in such manner that they may be shifted over the wall of the room from one position to another without detaching them from their supports.

Although a certain construction and ,.cer-

tain practical'uses of the present invention have been illustrated by way of example, it

will be understood that the invention may be constructed and practiced in various ways without departing from the scope of the appended claims.

I claim: v 1'. The combination with ablackboard, of

supporting means holding said blackboard in fixed position, a display device carried b said supporting means over said blackboard:

holding means slidable. longitudinally of said display device, and educational and instructional devices detachably carried by said holding means and movable. over the surface of the blackboard to cover any part thereof and leave any part of said blackboard exposed, as desired.

2. The combination with a blackboard, of a slotted bar extending longitudinally of and above said blackboard, a. holdin member slidably mounted in said' slotte bar for movement longitudinallly thereof,

said bar having openings to permit the insertion of said holding member at various points between the ends of said bar, supporting means projecting from said holding member through the slot of said bar, and a chart detachably supported on said sup ortmg means and suspended therefrom in front of said blackboard. I

3. The combination with a blackboard of a longitudinal bar extending above .said blackboard and having a slot in the front side thereof, a holding member slidable long tudinally in said bar, said bar overlapping the upper and lower edgesof said supporting member, said bar hating openings in the side thereof to permit the insertion of said holding member into said bar at points between the ends thereof, supportprojecting through the slot of said bar,

.50 supported.

and a chart detachably mounted on said supporting means and movably located 1n front of said blackboard.

4. The combination in an educational device of a blackboard, a longitudinall slotted.

bar mounted above said blackboar a plurality of holding members slidable longitudinally in said slotted bar, said bar having openings in the side of its slot to permit the insertion of said holding members at points between the ends of said bar, and means carried 'by the said holding members for supporting instructional devices in proximity to the face of said blackboard, sa1d openings permitting said instructional devlces to be super-imposed and to be arranged between each other longitudinally of the blackboard as desired without interfering with other educational or instructional devices 5. The combination in an educational device of a blackboard, a bar supported horizontally above said blackboard, said bar having an under-cut slot therein provided with said openings at intervals a ong the length of the bar, a plurality of holding devices each insertable into said under-cut slot through one of said openings, and a plurality of educational charts carried by said holding devices and suspended there from in front of said blackboard.

6. The combination in an educational device of a blackboard, a slotted bar extendin longitudinally of and above said blackboar relatively movable holding members slidable longitudinally in said slotted bar, said bar having u per and lower flanges for retainin said oldin members in said bar, one 0 said flanges aving o enings to permit the insertion and withdrawal of said holding members at points between the ends 7. The combination in an educational device of ablackboard, a slotted bar mounted in proximity to said blackboard and extending longitudinally thereof, relativelymovable holding members slidable longitudinally in said slotted bar, said holding members bein' formed of relatively soft material capa le of being readily perforated by thumbtacks, instructional devices, and thumbtacks engaging said instructional devices and said holding members for supportin said instructional devices over the face 0 said blackboard.

8. The combination in an educational device of a blackboard, a slotted bar mounted in proximity to said blackboard and extending longitudinally thereof, relatively movable holdin members slidable longitudinally in saif slotted bar, said holding members being formed of relatively soft material capable of being readily erforated by thumbtacks, the wall of said bar at one side of said slot being provided with a plurality of openin s to ermit the insertion and withdrawal 0% said holding members at points between the ends of said bar, instructional devices, and thumbtacks engaging said instructional devices and said holding mem bers .for supporting said instructional devices in various positions over the face of the blackboard.

ARGHIBALD E. MACQUARRIE. 

